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首页> 外文会议>1st ACM workshop on mobile internet through cellular networks 2009 >Proactive Transmission-based QoS Provisioning for Multicast and Broadcast Services in Mobile WiMAX Systems
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Proactive Transmission-based QoS Provisioning for Multicast and Broadcast Services in Mobile WiMAX Systems

机译：移动WiMAX系统中针对组播和广播服务的基于主动传输的QoS设置

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摘要

Mobile WiMAX systems have gained much attention for high transmission rates in cellular environments. One of the promising applications that can leverage high bit rates is multicast and broadcast services (MBSs). Although the expectation of IP-based multimedia streaming services in mobile environments is rising, QoS provisioning for those delay sensitive services is still challenging since mobility should be supported without intolerable delay. In this paper, we propose to transmit the streaming packets of MBSs proactively and probabilistically, so that the average handover delay perceived by a user is stochastically guaranteed. To quantify the tradeoff between the perceived handover delay and the bandwidth overhead of proactive transmissions, we develop an analytical model considering user mobility, user distribution, and session popularity. Comprehensive simulation is carried out to verify the analysis.
机译：对于蜂窝环境中的高传输速率，移动WiMAX系统已引起了广泛关注。可以利用高比特率的有前途的应用程序之一是多播和广播服务（MBS）。尽管在移动环境中对基于IP的多媒体流服务的期望不断提高，但是对于那些对延迟敏感的服务的QoS设置仍然具有挑战性，因为应该在不容忍的延迟下支持移动性。在本文中，我们建议主动和概率地传输MBS的流数据包，以便随机保证用户感知的平均切换延迟。为了量化感知的切换延迟和主动传输的带宽开销之间的折衷，我们开发了一种考虑用户移动性，用户分布和会话受欢迎程度的分析模型。进行了全面的仿真以验证分析。

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